如果用户单击tableview项，如何播放视频

Question

我希望能够点击tableview项目并播放 video.so 我为视频播放器编写了一些代码。我正在使用MPMediaplayer框架。我正在使用json parser。使用json parser从网络服务器中检索数据。我的问题是，如果我点击tableview项，我会收到以下异常：< / p>

＆＃39; NSRangeException＆＃39;，原因：＆＃39; * - [__ NSArrayM objectAtIndex：]：索引2超出空数组的范围＆＃39;

*** First throw call stack:
(0x1ba7012 0x15f6e7e 0x1b490b4 0x1c203a8 0x1ae59 0x813285 0x8134ed 0x121d5b3 0x1b66376 0x1b65e06 0x1b4da82 0x1b4cf44 0x1b4ce1b 0x249e7e3 0x249e668 0x763ffc 0xd66d 0x3a4770d 0x1)
libc++abi.dylib: terminate called throwing an exception

这是我的代码。

-(void)viewDidLoad
{
    urlsArray=[NSMutableArray alloc]init];
}
-(void)loadData
{

    url=[NSURL URLWithString:@"urls”];

    NSMutableURLRequest *request=[[NSMutableURLRequest alloc]initWithURL:url];

    [[NSURLConnection alloc]initWithRequest:request delegate:self];

    [UIApplication sharedApplication].networkActivityIndicatorVisible=YES;

}

-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [UIApplication sharedApplication].networkActivityIndicatorVisible=NO;

    NSError *jsonError = nil;

    id jsonObject = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&jsonError];

    if ([jsonObject isKindOfClass:[NSArray class]])      
    {

    }
    else if ([jsonObject isKindOfClass:[NSDictionary class]])
    {
        NSDictionary *jsonDictionary = (NSDictionary *)jsonObject;
        NSArray *array=[[NSArray alloc]init];
        array=[jsonDictionary objectForKey:@"video-urls"];        
        dataDictionary=[array objectAtIndex:0];
        NSLog(@"%@",dataDictionary);    
    }
    [urlsArray addObject:[dataDictionary objectForKey:@“Key1”]]; 
    [urlsArray addObject:[dataDictionary objectForKey:@“Key2”]]; 
    [urlsArray addObject:[dataDictionary objectForKey:@“Key3”]];
    [urlsArray addObject:[dataDictionary objectForKey:@“Key4”]];
    [urlsArray addObject:[dataDictionary objectForKey:@“Key6”]];       
    NSLog(@"%@",urlsArray); 
} 
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // self.selectedIndex=indexPath.row;
    currentUrlsArr=[urlsArray[indexPath.row]lastPathComponent];    
    NSString *documentDirectoryPath=   [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];   
    NSString *filePath=[documentDirectoryPath stringByAppendingPathComponent:currentUrlsArr];   
    NSURL *videoURL =[NSURL fileURLWithPath:filePath];  
    MPMoviePlayerViewController *videoPlayerView = [[MPMoviePlayerViewController alloc] initWithContentURL:videoURL];   
    videoPlayerView.moviePlayer.fullscreen=TRUE;    
    [self presentMoviePlayerViewControllerAnimated:videoPlayerView];    
    [videoPlayerView.moviePlayer play];   
    [tableView deselectRowAtIndexPath:indexPath animated:YES];   
}